For must of the circuits, I know how to analyze them but I am having difficulty with this one, and with the understanding of its purpose.
the switch changes his state every 0.5 msec. VZ is 5.6V
the problem I am having with this circuit, which is where I think I am doing my mistakes, is that I can't decide if this is a negative feedback or positive feedback. Also because of my fail to analyze the circuit correctly, I can't understand what is it for? I think it supposed to be astable multivibrator but I can't confirm it.
edit : the output of the circuit is the output of the opamp. image link : img
edit2 : assume general ideal op-amp, I used the TL because it was the 1st op-amp I saw.
edit 3: I am trying to draw the timing diagram and this is what I get and I can't understand why I am wrong here. sorry for the poor handwriting, no ruler was around. Vs = Vswitch. Vx= Voltage point between R1 and R2.